25436490 has 16 divisors (see below), whose sum is σ = 61047648. Its totient is φ = 6783056.

The previous prime is 25436479. The next prime is 25436491. The reversal of 25436490 is 9463452.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25436491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423912 + ... + 423971.

It is an arithmetic number, because the mean of its divisors is an integer number (3815478).

Almost surely, 2^25436490 is an apocalyptic number.

25436490 is an abundant number, since it is smaller than the sum of its proper divisors (35611158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25436490 is a wasteful number, since it uses less digits than its factorization.

25436490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847893.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 25436490 is about 5043.4601217815. The cubic root of 25436490 is about 294.0937042235.

The spelling of 25436490 in words is "twenty-five million, four hundred thirty-six thousand, four hundred ninety".